Johnston Boiler Company · Series
Johnston Boiler Company 358 Series (Ohio Special)
The Johnston 358 Series — the 'Ohio Special' — is a packaged firetube boiler documented in Johnston's current product tree for industrial and commercial steam and hot water service.
Series facts
- Type
- non-condensing
- Efficiency
- Unknown
- Fuel
- Packaged with Johnston burners available in gas, oil and combination gas/oil designs.
- Venting
- Unknown
- Models documented
- 0
- Warranty
- Not verified
About the 358 Series (Ohio Special)
The 358 Series (Ohio Special) appears in Johnston's current product navigation and product sitemap. Johnston's Products overview describes the company's boiler family as 'water-back, firetube, 3- or 4-pass, steam or hot water boilers', which is the documented context for the series.
Boilers.ca records the series for identification from the official product tree; no separate capacity table was retrieved from the product page at the time of writing, so no per-model ratings are printed. No official Canadian-sales statement was found.
Highlights
- Listed in Johnston's current product tree as '358 Series Boiler – Ohio Special'
- Packaged water-back firetube construction per the Products overview
- Recorded for identification; no per-model ratings printed without an official table
Models
358 Series (Ohio Special) models
One canonical page per model with input, output and efficiency kept separate.
Error codes and alerts
358 Series (Ohio Special) alerts
No alerts documented for this series yet.
Manuals
Official documents
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Services for Johnston Boiler Company boilers
Frequently asked questions
What is the Johnston 358 Series?
It is Johnston's 'Ohio Special' packaged boiler listed in the company's current product tree; the Products overview describes the family as water-back firetube 3- or 4-pass steam or hot water boilers.
Does Boilers.ca print 358 Series ratings?
No. No capacity table was retrieved from the official product page during research, so the series is recorded for identification only.
Talk to a boiler technician
Describe what the boiler is doing and get a straight answer about the next step.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
- Johnston — Products (358 Series – Ohio Special listing) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.